Year	National Currency Units per US Dollar
1950-01-01	0.000001900
1951-01-01	0.000001900
1952-01-01	0.000001900
1953-01-01	0.000001900
1954-01-01	0.000001900
1955-01-01	0.000001900
1956-01-01	0.000001900
1957-01-01	0.000001900
1958-01-01	0.000001900
1959-01-01	0.000001900
1960-01-01	0.001885860
1961-01-01	0.001885852
1962-01-01	0.001885850
1963-01-01	0.001885850
1964-01-01	0.001885850
1965-01-01	0.001885850
1966-01-01	0.001885850
1967-01-01	0.001885850
1968-01-01	0.001885850
1969-01-01	0.001885850
1970-01-01	0.001885000
1971-01-01	0.001883583
1972-01-01	0.001785000
1973-01-01	0.001785000
1974-01-01	0.001785000
1975-01-01	0.001785000
1976-01-01	0.001785000
1977-01-01	0.001785000
1978-01-01	0.001785000
1979-01-01	0.001785000
1980-01-01	0.001785000
1981-01-01	0.001785000
1982-01-01	0.001785000
1983-01-01	0.001785000
1984-01-01	0.001785000
1985-01-01	0.001785000
1986-01-01	0.001785000
1987-01-01	0.001785000
1988-01-01	0.001785000
1989-01-01	0.001785000
1990-01-01	0.001785000
1991-01-01	0.001785000
1992-01-01	0.001785000
1993-01-01	0.001785000
1994-01-01	0.222460758
1995-01-01	0.442771989
1996-01-01	0.401018354
1997-01-01	0.401566152
1998-01-01	0.401606426
1999-01-01	0.834084264
2000-01-01	1.322490516
2001-01-01	2.178182254
2002-01-01	2.346750000
2003-01-01	2.601333333
2004-01-01	2.733583333
2005-01-01	2.731666667
2006-01-01	2.743750000
2007-01-01	2.745000000
2008-01-01	2.745000000
2009-01-01	2.745000000
2010-01-01	2.745416667